This should never happen, but just in case.

Since dde005ef

 mosquito_pub is throwing error
that 'threading support has not been compiled' when compiled using cmake.
It looks like WITH_THREADING flag is not set at top level Makefile and used
only in lib/ directory, so library is correctly compiled with threading.
But for client this flag is undefined, so it gives error on '-l' option.

This commit moves part related to WITH_THREADING flag out of lib/CMakeLists.txt
to top levele CMakeLists.txt, so it could be accessible to all subdirectories.

Signed-off-by: Marek Wodzinski <majek@w7i.pl>

Fix memory leak that occurred if mosquitto_reconnect() was used when TLS
errors were present.

Closes #592. Thanks to smartdabao and aaronovz1.

Signed-off-by: Vinod Kumar <kumar003vinod@gmail.com>

Signed-off-by: Vinod Kumar <kumar003vinod@gmail.com>

Closes #566.

Thanks to marleau.

Closes #600.

Fix duplicate clients being added to by_id hash before the old client
was removed.

Closes #645.

This occurred when a bridge connected for the first time and so made a
local subscription for outgoing topics.

Closes #701.

This reverts commit 6fc7cadb.

The signal handler thread on win32 did listen to 4 HANDLEs,
of which only 3 were initialized.
The result was 1 thread eating 100% cpu.
This commit reduces the HANDLE array storage.

Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>

https://forum.snapcraft.io/t/errors-when-building-via-launchpad/7448

Closes #849. Closes #965. Thanks to Wolfgand Hottgenroth and Dustin Sallings.

Closes #481.

Closes #968.